For TV stations unannounced visits, investigation and evidence collection, anti-counterfeiting Trade and Industry Bureau, Bureau of Quality Supervision, do the rectification, the public security bureau forensics, law firms, the Anti-Corruption Bureau, the courts.

First, it is determined in transmitting and receiving the normal case, the transmitter switch toggle to ON, the lamp is lit on the machine, the transmitter has entered into normal transmit signal state, and then opened receiver knob switch receiver indicator lightsthe receiver can clearly listening to the voice of the transmitter collected. Equipped with headphones listens better;

2: Voice-activated Listening Mode

First, it is determined in transmitting and receiving the normal case, the transmitter switch toggle to voice listening mode, the indicator lights on the machine, the transmitter has transmit signal enters a wait state, and then the receiver knob switch is open, the receiver directionslights, when the emitter surrounding sounds greater than 60 decibels, the transmitter will enter the state of the transmission signal, the receiver can now clear listening to the voice of the transmitter collected. Equipped with headphones listens better;

3: Recording Listener Mode

First, the TF card is inserted into the receiver card slot, and then open the transmit and receive switch, the received signal in the normal case, click the Record button on the receiver starts recording, the recording indicator starts flashing slowly. After the completion of the recording, short press the stop button automatically save the recording file.

4: Recording Playback Mode

Switch to turn the knob of the receiver, and the normal standby state, press the play button, the machine will automatically play the last paragraph of the audio file. Long three seconds, press the play button to delete the recordings. In the previous paragraph and the next paragraph to choose the operation.

5; MP3 Playback ModeOpen receiver, into the normal standby state, long press MP3 switch button, the machine will automatically according to the order of play MP3. can according to their own needs operation to find their own love songs.